28815064 has 8 divisors (see below), whose sum is σ = 54028260. Its totient is φ = 14407528.

The previous prime is 28815043. The next prime is 28815079. The reversal of 28815064 is 46051882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800934 + ... + 1800949.

Almost surely, 2^28815064 is an apocalyptic number.

It is an amenable number.

28815064 is a deficient number, since it is larger than the sum of its proper divisors (25213196).

28815064 is a wasteful number, since it uses less digits than its factorization.

28815064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601889 (or 3601885 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28815064 is about 5367.9664678535. The cubic root of 28815064 is about 306.5772066297.

The spelling of 28815064 in words is "twenty-eight million, eight hundred fifteen thousand, sixty-four".